/**
  ******************************************************************************
  * @file    main.c
  * @author  MCU Application Team
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2023 Puya Semiconductor Co.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by Puya under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
  
/* Includes ------------------------------------------------------------------*/
#include "second_led.h"


/* Private define ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private user code ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/

static void APP_ConfigTIM17Base(void);
static void APP_ConfigPWMChannel(void);

/**
  * @brief  Main program.
  * @retval int
  */
int second_led_init(void)
{

  /* Enable TIM17 and GPIO clock */
  LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_TIM17);
  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);

  /* Configure TIM17 PWM channels and PWM mode */
  APP_ConfigPWMChannel();
  
  /* Configure and enable TIM17 PWM2 mode */
  APP_ConfigTIM17Base();
  
 return 0;
}

/**
  * @brief  Configure TIM17 PWM related GPIO
  * @param  None
  * @retval None
  */
static void APP_ConfigPWMChannel(void)
{
  LL_GPIO_InitTypeDef TIM17CH1MapInit= {0};
  LL_TIM_OC_InitTypeDef TIM_OC_Initstruct ={0};

  /* Configure PA8/PA9/PA10 as TIM17_CH1/TIM17_CH2/TIM17_CH3 */
  TIM17CH1MapInit.Pin        = LL_GPIO_PIN_8|LL_GPIO_PIN_9|LL_GPIO_PIN_10;
  TIM17CH1MapInit.Mode       = LL_GPIO_MODE_ALTERNATE;
  TIM17CH1MapInit.Alternate  = LL_GPIO_AF_2; 
  TIM17CH1MapInit.Speed      = LL_GPIO_SPEED_FREQ_HIGH;
  TIM17CH1MapInit.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  TIM17CH1MapInit.Pull       = LL_GPIO_PULL_NO;
  LL_GPIO_Init(GPIOA,&TIM17CH1MapInit);
  
  TIM_OC_Initstruct.OCMode        = LL_TIM_OCMODE_PWM2;     /* Mode: PWM2 */
  TIM_OC_Initstruct.OCState       = LL_TIM_OCSTATE_ENABLE;  /* Channel enable */
  TIM_OC_Initstruct.OCPolarity    = LL_TIM_OCPOLARITY_HIGH; /* Active polarity: high level */
  TIM_OC_Initstruct.OCIdleState   = LL_TIM_OCIDLESTATE_LOW; /* Complementary channel active polarity: high level */
  /* Channel 1 compare value: 250 */
  TIM_OC_Initstruct.CompareValue  = 250;
  /* Configure channel 1 */
  LL_TIM_OC_Init(TIM17,LL_TIM_CHANNEL_CH1,&TIM_OC_Initstruct);
  /* Channel 2 compare value: 500 */
  TIM_OC_Initstruct.CompareValue  = 500;
  /* Configure channel 2 */
  LL_TIM_OC_Init(TIM17,LL_TIM_CHANNEL_CH2,&TIM_OC_Initstruct);
  /* Channel 3 compare value: 750 */
  TIM_OC_Initstruct.CompareValue  = 750;
  /* Configure channel 3 */
  LL_TIM_OC_Init(TIM17,LL_TIM_CHANNEL_CH3,&TIM_OC_Initstruct);
}

/**
  * @brief  Configure TIM base
  * @param  None
  * @retval None
  */
static void APP_ConfigTIM17Base(void)
{
  /* Configure TIM17 */
  LL_TIM_InitTypeDef TIM17CountInit = {0};
 
  TIM17CountInit.ClockDivision       = LL_TIM_CLOCKDIVISION_DIV1;   /* No clock division */
  TIM17CountInit.CounterMode         = LL_TIM_COUNTERMODE_UP;       /* Up counting mode */
  TIM17CountInit.Prescaler           = 240-1;                      /* Prescaler value: 240 */
  TIM17CountInit.Autoreload          = 10-1;                      /* Autoreload value: 10 */
  TIM17CountInit.RepetitionCounter   = 0;                           /* Repetition counter value: 0 */
  
  /* Initialize TIM17 */
  LL_TIM_Init(TIM17,&TIM17CountInit);
  
  /* Enable main output */
  LL_TIM_EnableAllOutputs(TIM17);

  /* Enable TIM17 counter */
  LL_TIM_EnableCounter(TIM17);
}

/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
